Study on Dynamic Simulation of 4-Bundle Ice-Coated Conductor Galloping Based on 3-D Model

Abstract:

Galloping of power transmission lines is a low frequency self-oscillation with large amplitude. The aerodynamic effect on each sub-conductor of 4-bundle conductor is different due to wake-flow-influence. In order to explore the reasons leading to galloping, a 3-D model for power transmission line is built. A two-node quadratic beam element in 3-D and a structure mass element are applied to establish the finite element model of iced 4-bundle conductor in ANSYS software. Then dynamic transient response calculations are made on this model. According to the results, difference in vibration of sub-conductors and frequency coupling of torsional and transverse vibration can be confirmed. The simulation results illustrate the wake-flow-influence effect and the coupled motions effect on galloping of 4-bundle conductor.

• Periodical: Applied Mechanics and Materials (Volumes 105-107)
• Pages: 474-477
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.105-107.474
• Online since: September 2011
• Authors: Shi Jing Wu, Zeng Lei Zhang, Zhen Hao Liu, Ji Cai Hu
• Keywords: 3D Model, 4-Bundle Conductor, Dynamic Simulation, Galloping

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